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Finding the Fourth Proportional to 277.21, 382.48 and 222

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Solution

The fourth proportional to 277.21, 382.48 and 222 is: 306.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    277.21 : 382.48 = 222 : x
  2. Step 2: Convert to fraction form
    277.21/382.48 = 222/x
  3. Step 3: Cross multiply
    277.21x = 382.48 × 222
  4. Step 4: Simplify right side
    277.21x = 84,910.56
  5. Step 5: Solve for x
    x = 84,910.56/277.21
  6. Step 6: Final answer
    x = 306.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.